大家来看看这是什么错误！！

Question

使用的是Oracle数据库。。 序列号自增问题
http://topic.csdn.net/u/20090713/17/6489968b-34ab-45ae-b9f5-4126f56daf0d.html

Answer 1

现在又报错误了如下：信息: Statistics: disabled
2010-8-3 13:31:14 org.hibernate.cfg.SettingsFactory buildSettings
信息: Deleted entity synthetic identifier rollback: disabled
2010-8-3 13:31:14 org.hibernate.cfg.SettingsFactory buildSettings
信息: Default entity-mode: pojo
2010-8-3 13:31:14 org.hibernate.impl.SessionFactoryImpl <init>
信息: building session factory
2010-8-3 13:31:14 net.sf.ehcache.config.Configurator configure
警告: No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/D:/workspace/shopping/WEB-INF/lib/ehcache-1.1.jar!/ehcache-failsafe.xml
2010-8-3 13:31:30 org.hibernate.impl.SessionFactoryObjectFactory addInstance
信息: Not binding factory to JNDI, no JNDI name configured
org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.wy.pojo.TbAdvertisement
at org.hibernate.id.Assigned.generate(Assigned.java:33)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)
at com.wy.dao.AdvertisementDao.advertisementInsert(AdvertisementDao.java:98)
at com.wy.webtier.AdvertisementAction.advertisementInsert(AdvertisementAction.java:111)
at com.wy.webtier.AdvertisementAction.execute(AdvertisementAction.java:33)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:121)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)

Answer 2

我的映射文件时这样的：<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="com.wy.pojo.TbAdvertisement" table="TB_ADVERTISEMENT" schema="SHOP">
        <id name="id" type="java.lang.Long">
            <column name="ID" precision="10" scale="0" />
            <generator class="assigned" />
        </id>
        <property name="imageName" type="java.lang.String">
            <column name="IMAGE_NAME" length="50" />
        </property>
        <property name="imagePath" type="java.lang.String">
            <column name="IMAGE_PATH" length="500" />
        </property>
        <property name="adPageUrl" type="java.lang.String">
            <column name="AD_PAGE_URL" length="500" />
        </property>
        <property name="re" type="java.lang.String">
            <column name="REMARK" length="500" />
        </property>
    </class>
</hibernate-mapping>

Answer 3

 <id name="id" type="java.lang.Long">
            <column name="ID" precision="10" scale="0" />
            <generator class="assigned" />
        </id>
LZ是用的这中序列，出问题了。